Lip turning machine



Nov. 16, 1937. J. M. WHELTON LIP TURNING MACHINE Filed April 7, 1936 2Sheets-Sheet l //\/l/EN 727/? Nov. 16, 1937. J. M. WHELTO N LIP TURNINGMACHINE Filed April 7, 1956 2 Sheets-Sheet 2 Patented Nov. 16, 1937UNITED STATES PATENT OFFICE 2,099,042 LIP TURNING MACHINE ApplicationApril 7, 1936, Serial No. 73,125

8 Claims.

This invention relates to lip turning or channel opening machines and isherein disclosed as embodied in a machine adapted to operate uponchanneled outsoles of shoes from which the lasts 1 have been removed.The invention, however, is by no means limited to use in connection withthis type of work, being applicable to operations upon unattachedinsoles or outsoles, or upon outsoles attached to shoes from which thelasts have.

not yet been withdrawn. The illustrated machine is particularly usefulin operations upon McKay sewed shoes and all other types of through-and-.through stitched shoes, for example Littleway shoes. It enables thelip-turning operation to be delayed until immediately before thestitching and after the removal of the last, thereby avoiding any dangerof closing or otherwise dis- ...turbing the turned lip when the last isremoved. It is an object of the invention to provide an improved channelopening machine. In the illustrated machine the shoe is supportedinternally upon a horn, while a plow operates to raise the channel lipand another tool sets the lip. In I accordance with a feature of theinvention means are provided for operating the plow and the lipsettingtool to feed the work.

The above and other features of the invention will become more fullyevident from the description which now follows of an illustrativemachine embodying the invention.

Referring to the drawings,

Fig. 1 is a perspective View of the improved machine;

Fig. 2 is a plan view of the same machine;

Fig. 3 is a view in side elevation of the upper portion of the machine;

-Fig. 4 is a View in side elevation of the workengaginginstrumentalities; and

Fig. 5 is a plan view of the work-engaging instrumentalities.

The supporting structure of the machine comprises a frame In adapted tobe secured upon a work bench. The work-engaging members comprise a plowl2 which operates to raise to upstanding position a channel lip formedon a sole, and a presser I4 which operates to complete the turning ofthe channel lip. The plow l2 and the presser M are driven in such amanner not only as to perform their respective functions, but also tocooperate in feeding the work. In order that the machine may be used tooperate upon outv soles of completed shoes there is provided a supportin the form of a horn l6 adapted to extend ries at its upper end asmall, freely rotatable button 18 which supports the sole from theinterior while the operation is being performed.

The horn 16 has a depending cylindrical shank portion 20 whereby thehorn is clamped forheightwise adjustment in a split lug 22 extend- .ingfrom a block 24. A clamping screw having a handle 26 operates to tightenor loosen the clamping pressure upon the cylindrical portion 20. Theblock 24 is clamped upon a vertically disposed pivot pin 28 the oppositeend portions of which are mounted for free turning and sliding' movementin bearings formed in upper and lower shelf-like extending portions 30and 32, respectively, of the frame In. The pin 28 is subt-J stantiallycoaxial with the button l8, which arrangement enables the horn l6 to beturned as may be necessary in manipulating the shoe without varying theposition of the button [8 relatively to the tools l2 and I4. The horn l6nOI'j-r mally occupies a position somewhat below the operating tools toenable a shoe to be placed over the horn or to be removed therefrom. Inorder to raise the horn into operating position there is provided atreadle mechanism comprise. ing a treadle bar 34 fulcrumed upon a pin 36supported in a member 38 which is adapted to be secured to the floor.Extending upwardly from the treadle bar is a rod 40 pivotally connectedat its upper end to one arm of a bell crank, lever 42 which is fulcrumedupon a pin 44 secured in a lug 46 extending from the frame Ill. Theother arm of the bell crank 42 is pivotally connected by a pin 41 to oneend of a link 48, the opposite end of which link is pivotally con'.nected to one end of a lever 50. The lever 50 is fulcrumed upon a pin 52secured in a lug 54 which extends from the frame It. The opposite end ofthe lever 50 is bifurcated and comprises a pair of ears 56 disposed onopposite sides of? the pin 28 and adapted to bear against the lowersurface of the block 24. A spring 51 normally holds the treadle up.Depression of the treadle bar-34 will raise the horn IE to its operatingposition. While a special stop member may be employed to limit downwardmovement of the treadle, it will ordinarily be satisfactory to rely uponthe floor itself as a treadle stop. The horn l6 should be adjusted tothe desired height in the lug 22 when the treadle is down in its stopposition. The lever 42, link 48 and lever 50 are so arranged as tomaintain the pin 4! always on the same side of the line joining thecenters of the pins 44 and 52.

The supporting and driving mechanism of the hold the block and therebythe too1tI2 down; :The

operating tools I2 and I4 will now be described. The tool I2 has formedin it a slot. 58 through which extends a bolt 60 whereby the tool I2 maybe clamped in any desired position of horizontal adjustment in a lever62. The lever 62 has formed in it a horizontal 'guideway in which theshank portion of the tool I2 is slidably mounted for purposes of suchadjustment. The, opposite end of the'lever 62: carries a pin 54throughwhich movement is communicated from an arm 66 to the lever 62.The central portion of the lever 62 has formed in it an opening 68across which extends a trunnion pin 70 constitutingl-a.floating fulcrumfor the lever 02. The opening 68 extends around a box l2 within whichis:formed'avertical slideway for a block l4 throughwhich' extends thetrunnion pin I0. A cover plate 16 is provided for the box 12. Acompression spring 181; interposed between the under surface of, theplate I8 and the upper surface of the block "I4 tends to box I2 .ismounted for --free .turning movement upon a' vertical pin 80 which'issecurecl in a;

. bracket 82 bolted to. the frame I0.

":;.which .extends thepin 64; The .arm 66 extends mfrorn asleeve 84whichris freely rotatable upon apin fifisupportedin suitable bearings88formed in the frame IiL. 'Another arm .90 extends down-.

IJWardIY fI'Om the sleeve 84 and carries a camroll 92. Theroll 92engagesaslot 94 formed in a facercarn 96 whichis secured upon a shaft 98journaled in. bearings? I formed in .the frame- The shaftBil-carriesapulley I02 whereby the shaft 98 .may be: driven from anysuitable sourceiof power.

.jyiExtending' rearwardly :fromz;the::box :12 .is an :arm 94 whichcarries alcamcroll llifigextending :into ajslot we. formed in acylindrical orbarrel' scam. i'lagwhich .is mountedupomthe. shaft 98.

Itis evident that as-theshaft 98 rotates the'icam I rolL 95:3 willimpart a'horizontal .oscillationitothe of; the pin 80. while thegcamroll 92 :will; impart a .verticalnoscillation to the lever IiLthe effectof whichupon the tool I2 willlater be described.

arm=l i4. 1 Eulcrumedupon apim IJBScarried in -1- the upper; end:ofthesarm? I .I4;is.a-lever I I8.having a depending: lug I 20.throughiwhich the; pin- I I6 :extends; The tool 14 ds slidably: mounted:for 1 horizontal adjustment in a..guideway formed in the end of theleverzI I8. A clamping. bolt; I22

extending through a horizontal slot-: I24 in: the

tool .l lsecures the tool to the lever .inria desired positionofhorizontal adjustmentsrflhe rear end .of the-lever M83 is pivotallyconnected by means:

of a pin I25 to a rod; I28, the lower. endzof which rod is freelyslidable throughla diametrical opening in a pin I30. A compressionspring; I32 sur-.

.zrounding. the rod.I28 is interposed between a shoulder. I33 on theupper portionxof therod I28 and thepin 430.

...rod I28 and securedv thereupon .bya lock nut I36 ..adjustably limitsthe expansion ofthe spring I28.v

and prevents theend oftherrod I28 from sliding through the-openinginthepin- I30. -The pin I30 is carriedv in theendxof an arm I38 which extendsfrom a sleeve I46 freely rotatable: upon thepin- 1 85. 1 An extensionI42 from the arm; I38 carriesa :cam roll I44 whichv engages a cam: slotI46 formed in a face cam I48 mounted upon the: .shaft 98.

.Theiarm Bthas formed in it a slot 61 in v @which is slidab-ly mountediablock 69: through A nut. I34 threaded upon the Integral with the bar H4is an extension I50 which carries a cam roll I52 engaging a slot I54formed in a face cam I56 mounted upon the shaft 98. It will be observedthat as the shaft 98 rotates the cam roll I52 will oscillate the bar Ii4 about the axis of the pin I I 2 which will cause an oscillation in anin-and-out direction of the tool I4 while at the same time the cam rollI 44 will oscillate the lever I I8 aboutrthe: pin I I6 and therebyimpart to the tool 54 vertical oscillation.

In operating the machine a shoe having an outsole O and an upper U ismounted upon the i" button J8 with the horn I6 extending within the,upper ofthe, shoe.. The outsole O has formed r'upo'n'it'a lipL which isto be raised by the majchine.v The lip L is first engaged by the plow l2which raises. the lip to upstanding position, whereupon the lip isturned over away from the marginof the sole and is pressed downwardly bythe tool I4 as the work advances. The oscillatory movements of the:lever 52. are such as .to' cause the plow I2 to. bear downwardly .in.gripping engagementwith the base of: thechannelformed on .the cutsoleand to feed thesolewhile so gripping it. Theabase ofthechannelisthatportion of the sole which, before, the lipli israised,.1 liesdirectly under the lip L. At the termination of the feedingmovement the gripping pressure is released, andv the plow isretractedwhilethesole is heldstationary by the vpress'er I4. .Iti isinthe .course of its. retraction or;back-.feed:movement that the plowoperates to raise the lip The gripping pressure of. the plowis obtainedby upward movement of the'pin 6.4..derived from the cam 96, :Whichiu-pward movement: compresses the. spring l8 ,as the lever 52 fulcrumsabout'zthe locality of engagement of the plow I2. withsthe work.. Therelease, .orsubstantial release, ofthis pressure is obtained by downwardmovement of the pin 64. :The vertical movement of the plow t2:

- 2 where itengages they work -piece..is slight, .being equivalent to.the extent to which: the. material is p compressed. 'The plow. IZyduringitsiback-feed ralever [52..and thence touthe tool I2.about the axismovement, drags along the surface of the work piece.-":..Theyieldingofethe spring I8 notonlyaccommodates locaLvariations oftthickness inthe'same work pieces but alsorenders unnecessary:a.-;changein'thezheightwise adjustment of the horn I6 for work pieces which:differsomewhat in thickness. J

As the plow I2.approaches the end of its feed ingmovement, the presseri4 moves'outwardly with respect to the machine or inwardly-andtransversely with respect to the sole,. at thesame rtimei moving;downwardly to clamp thev sole against the button IS.' .The plow l2pauses at the .1 1 end .of its feed stroke,.maintaining its .pressureagainst the work until the presser 14 has arrived atxclamping position:The presser as operates to hold the sole clamped during the retractionor .back-feedrmovementof the plow I2.. At the end of itsback-feedmovement theplow [2 again :comes .to rest, maintaining its: pressureagainst the work; until the pressure I4 releases its ;clamping pressureandibegins its movement of retra .tion. The presserMcompletesits'retraction and begins its advance while: the plow I21is=feeding thework. The presser 514 is. provided: with an overhanging extension I58the under: surface of which bears upon the upturned lip:L' and exerts :awiping or ironing action upon the lip to press the lipflat, as. shown inFig. 4. The vertical M movement of the presser I4 :is greater thantheverticalmovement of the plow IZLl The: spring I 32 accommodatesvariations inthickness of the workpiece. Those portions of the surfacesof the plow I2 and the presser I4 which engage the margin of the outsoleare preferably roughened to increase their gripping characteristics.

It will be observed that the plow l2 operates as a feed foot in itsadvancing movement and as a plow to raise the channel lip in itsbackfeed movement while the presser I58 operates both as a pressure footto hold the work during the back-feed of the plow l2 and also as apressing or ironing member to set the lip L. Figures 4 and 5 show theplow 12 at the end of its feeding stroke and just about to release thework from its gripping pressure while the presser I4 is at the end ofits outward and downward stroke and is just clamping the workstationary.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

l. A channel opening machine comprising a horn adapted to supportinternally the sole of a shoe, a plow for raising a channel lip formedon the sole, a tool for setting the lip, and means for operating saidplow and said lip-setting tool to feed the work.

2. In a channel opening machine, a plow for raising a channel lip formedon a sole, said plow being constructed and arranged for heightwisemovement relatively to the sole and also for movement along the line offeed, means for oscillating said plow along the line of feed, and meansfor pressing said plow against the base of the channel during eachadvance of the plow to feed the work and for relieving the pressure ofthe plow during each retraction of the plow.

3. In a channel opening machine, a pair of tools constructed andarranged respectively to raise a channel lip formed on a sole of a shoeand to set the lip in open position, a horn adapted to extend within theshoe for supporting the sole, means for imparting an oscillatory feedingmovement to said lip-raising member to cause said lipraising member inits advance movements to feed the sole, and means for operating saidlip-setting tool to set the lip in open position andduring the back-feedmovements of said lip-raising member torhold the sole clamped againstsaid horn.

4. In a channel opening machine, a feed member engageable with the baseof a channel formed on a sole, said feed member being mounted forheightwise movement relatively to the sole, means for oscillating saidfeed member along the line of feed, and means operable withoutsubstantial heightwise movement of said feed member at the locality ofengagement between the feed member and the sole, to press said feedmember against the sole during each feeding movement ber engageable withthe base of a channel formed on a sole, a support for said feed memberconstructed and arranged for oscillatory movement of said feed memberalong the line of feed, a floating fulcrum for said support, meansacting upon said support to swing said support about said fulcrum in adirection to cause said feed member to press against the base of thechannel during the advance movements of the feed member, and resilientmeans for yieldably supporting said floating fulcrum and for maintainingsaid feed member against the base of the channel upon release of feedingpressure.

6. In a channel opening machine, a feed foot engageable with the base ofa channel formed on a sole, a lever upon which said feed foot iscarried, a spring-yieldable fulcrum for said lever, means for relativelyswinging said lever about said fulcrum to cause said feed foot, as saidfulcrum yields, to press against the channel base, a support for saidfulcrum pivotally mounted to enable said feed foot to move in the lineof feed, and means operating upon said fulcrum support to causeoscillation of said feed foot along the line of feed, said swingingmeans being oscillatory and operating to press the feed foot against thechannel base during the advance of the feed foot and to release thepressure of the feed foot during retraction.

7. In a channel opening machine, a lip-raising tool, a lip-setting tool,means for oscillating said lip-raising tool in the line of feed of thework, a cam mechanism to which said lip-raising tool is connected, saidcam mechanism being constructed and arranged to cause the lip-raisingtool to press against the work during its advancing movements to feedthe work and to release its pressure against the work during itsback-feed movements, and means for operating said lip-setting tool toset the lip and to hold the work stationary during the back-feed of thelip-raising tool.

8. In a channel opening machine, a lip-raising tool, a lip-setting tool,four driven cams, mechanism operated by one of said cams for oscillatingsaid lip-raising tool in the line of feed of the work, mechanismoperated by another of said cams for causing said lip-raising tool topress against the work during its advancing movements to feed the workand to release its pressure against the work during its back feedmovements, mechanism operated by another of said cams for oscillatingsaid lip-setting tool transversely of the line of feed to wipe theupturned lip inwardly from the margin of the sole, and mechanismoperated by the remaining cam for oscillating said lip-setting tool in aheightwise direction relatively to the work to set the lip and to holdthe sole stationary by clamping pressure during the back-feed movementof said lip-raising tool.

JOHN M. WHELTON.

. CERTIFICATE OF CORRECTION. Patent I\To.. 2,099,0h2. November l6, 1957.

JOHN M., wHELToN.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 2,second column, line 61;, and page 5, first column, line 9, for the word"pressure" read presser; and that the said Letters Patent should be readwith these corrections therein that the same may conform to the recordof the case in the Patent Office.

Signed and sealed this 22nd day of February; A D. 1958.

Henry Van Arsdal e, (Seal) Acting Commissioner of Patents.

